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Cheiranthus. Cheiranthus Cheiri L. Wall flower.—The flowers yield an oil which when highly diluted has the natural pleasant odor, but when concentrated the odor is disagreeable. (Schim. Rep; 1911, 95; also A. Pharm., 1912, 211.) From the leaves of this cruciferous European plant Moritz Reeb (A. E. P. P., 1899, vol. xliii) has obtained a glucoside, belonging to the digitalis group, of such power that 0.0005 Gm. will produce systolic cardiac arrest in the frog; also a crystalline alkaloid, cheirinine, C18H35O17N3, which acts upon nerve centers and also upon muscles.